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Paris Hilton, Doug Reinhardt

Miguel Garcia/Getty Images

Maybe this is just Paris Hilton's way of saying thank you to Doug Reinhardt for her Valentine's Day present?

Sources confirm to E! News exclusively that the heiress and Amanda Bynes' ex are in the midst of flying to Tokyo together for a romantic getaway. 

The coy couple, who, we’re told, have been hooking up secretly for late-night trysts at Paris' place for several weeks now, left Los Angeles International Airport late Tuesday morning on a United Airlines flight bound for the Land of the Rising Sun.  

A source tells E! News that Paris has several business-related appearances scheduled in Japan later this week, and she invited Doug to join her for some fun.

“She had an extra seat in first class,” says the source. “Instead of taking her assistant, she took Doug.”